Lead Free factory Polymer Tungsten (also known as Tungsten-filled Polymer) is a composition of various resins and Tungsten powder which are mixed through special metallurgical technology. The resins can be ABS (acrylonitrile butadiene styrene), PP (polypropylene), PBT (polybutylene terephthalate), PA (polyamide), PU (polyurethane), and TPE (thermoplastic elastomer), etc. It鈥檚 an ideal...